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Class: Opal::Nodes::TopNode

Inherits:
ScopeNode show all
Defined in:
opal/lib/opal/nodes/top.rb

Overview

Generates code for an entire file, i.e. the base sexp

Constant Summary

Constants included from Helpers

Helpers::BASIC_IDENTIFIER_RULES , Helpers::ES3_RESERVED_WORD_EXCLUSIVE , Helpers::ES51_RESERVED_WORD , Helpers::IMMUTABLE_PROPS , Helpers::PROTO_SPECIAL_METHODS , Helpers::PROTO_SPECIAL_PROPS

Instance Attribute Summary

Attributes inherited from ScopeNode

#block_name , #catch_return , #defs , #gvars , #ivars , #locals , #methods , #mid , #name , #parent , #scope_name , #uses_super , #uses_zuper

Attributes inherited from Base

#compiler , #type

Instance Method Summary collapse

Methods inherited from ScopeNode

#add_arg , #add_proto_ivar , #add_scope_gvar , #add_scope_ivar , #add_scope_local , #add_scope_temp , #class? , #class_scope? , #def? , #def_in_class? , #find_parent_def , #get_super_chain , #has_local? , #has_temp? , #identify! , #identity , #in_scope , #in_while? , #initialize , #iter? , #module? , #new_temp , #next_temp , #pop_while , #proto , #push_while , #queue_temp , #sclass? , #to_vars , #top? , #uses_block! , #uses_block?

Methods inherited from Base

#add_gvar , #add_ivar , #add_local , #add_temp , children , #children , #compile_to_fragments , #error , #expr , #expr? , #expr_or_nil , #fragment , handle , handlers , #helper , #in_while? , #initialize , #process , #push , #recv , #recv? , #s , #scope , #stmt , #stmt? , truthy_optimize? , #unshift , #while_loop , #with_temp , #wrap

Methods included from Helpers

#current_indent , #empty_line , #indent , #ivar , #js_falsy , #js_truthy , #js_truthy_optimize , #line , #lvar_to_js , #mid_to_jsid , #property , #valid_ivar_name? , #valid_name? , #variable

Constructor Details

This class inherits a constructor from Opal::Nodes::ScopeNode

Instance Method Details

#add_used_helpers ⇒ Object 

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# File 'opal/lib/opal/nodes/top.rb', line 73
def add_used_helpers
 helpers = compiler.helpers.to_a
 helpers.to_a.each { |h| add_temp "$#{h} = Opal.#{h}" }
end

#add_used_operators ⇒ Object 

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# File 'opal/lib/opal/nodes/top.rb', line 78
def add_used_operators
 operators = compiler.operator_helpers.to_a
 operators.each do |op|
 name = Nodes ::CallNode ::OPERATORS [op]
 line "function $rb_#{name}(lhs, rhs) {"
 line " return (typeof(lhs) === 'number' && typeof(rhs) === 'number') ? lhs #{op} rhs : lhs['$#{op}'](rhs);"
 line "}"
 end
end

#closing ⇒ Object 

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# File 'opal/lib/opal/nodes/top.rb', line 53
def closing
 if compiler.requirable?
 line "};\n"
 elsif compiler.eval?
 line "})(Opal, self)"
 else
 line "})(Opal);\n"
 end
end

#compile ⇒ Object 

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# File 'opal/lib/opal/nodes/top.rb', line 13
def compile
 push version_comment
 opening
 in_scope do
 line "Opal.dynamic_require_severity = #{compiler.dynamic_require_severity.to_s.inspect};"
 compile_config
 body_code = stmt(stmts)
 body_code = [body_code] unless body_code.is_a?(Array)
 add_temp 'self = Opal.top' unless compiler.eval?
 add_temp compiler.eval? ? '$scope = (self.$$scope || self.$$class.$$scope)' : '$scope = Opal'
 add_temp 'nil = Opal.nil'
 add_used_helpers
 add_used_operators
 line scope.to_vars
 compile_method_stubs
 compile_irb_vars
 compile_end_construct
 line body_code
 end
 closing
end

#compile_config ⇒ Object 

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# File 'opal/lib/opal/nodes/top.rb', line 104
def compile_config
 line "var OPAL_CONFIG = { "
 push "method_missing: #{compiler.method_missing?}, "
 push "arity_check: #{compiler.arity_check?}, "
 push "freezing: #{compiler.freezing?}, "
 push "tainting: #{compiler.tainting?}"
 push "};"
end

#compile_end_construct ⇒ Object

Any special END content in code

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# File 'opal/lib/opal/nodes/top.rb', line 97
def compile_end_construct
 if content = compiler.eof_content
 line "var $__END__ = Opal.Object.$new();"
 line "$__END__.$read = function() { return #{content.inspect}; };"
 end
end

#compile_irb_vars ⇒ Object 

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# File 'opal/lib/opal/nodes/top.rb', line 67
def compile_irb_vars
 if compiler.irb?
 line "if (!Opal.irb_vars) { Opal.irb_vars = {}; }"
 end
end

#compile_method_stubs ⇒ Object 

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# File 'opal/lib/opal/nodes/top.rb', line 88
def compile_method_stubs
 if compiler.method_missing?
 calls = compiler.method_calls
 stubs = calls.to_a.map { |k| "'$#{k}'" }.join(', ')
 line "Opal.add_stubs([#{stubs}]);" unless stubs.empty?
 end
end

#opening ⇒ Object 

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# File 'opal/lib/opal/nodes/top.rb', line 42
def opening
 if compiler.requirable?
 path = Pathname(compiler.file).cleanpath.to_s
 line "Opal.modules[#{path.inspect}] = function(Opal) {"
 elsif compiler.eval?
 line "(function(Opal, self) {"
 else
 line "(function(Opal) {"
 end
end

#stmts ⇒ Object 

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# File 'opal/lib/opal/nodes/top.rb', line 63
def stmts
 compiler.returns(body)
end

#version_comment ⇒ Object 

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# File 'opal/lib/opal/nodes/top.rb', line 113
def version_comment
 "/* Generated by Opal #{Opal ::VERSION } */"
end

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